“It is good news that activity is so high on the Norwegian continental shelf. We believe this is because of the significant restructuring the industry has done in recent years, which has increased competitiveness,” the lobby said in a statement.

But it said investment would start to fall after 2019 to 182.5 billion crowns in 2020, 168 billion crowns in 2021, 156.5 billions crowns in 2022 and 141.5 billion crowns in 2023.

The group said its forecast for investment was based on a survey of companies that was completed before October when oil was trading at above $70 a barrel. Since then prices had dropped and were trading at $58 a barrel on Monday.

NOG head Karl Eirik Schjoett-Pedersen said the price fall was not expected to have a major impact. “We think the projects are quite robust, because the companies have been focused to make them economic at even lower oil prices,” he said.

Norway’s Equinor said its new projects had an average break-even price of $21 a barrel, while Aker BP said it would not invest in projects with break-even price higher than $30 a barrel.

“I’m very concerned about the need to focus on the costs,” Schjoett-Pedersen said.

NOG said exploration spending was expected to rise to 30 billion crowns in 2019 from 26 billion in 2018, although the number of wells being drilled was not expected to change from last year’s 56.